In the early 20th century, innovations in transportation had a significant impact on the citrus industry in Florida by:

C. Citrus could be shipped further.

Explanation:

Advancements in transportation, particularly the development of refrigerated railcars and improved road infrastructure revolutionized the citrus industry in Florida. Before these innovations, transporting perishable goods like citrus fruits over long distances was challenging due to spoilage.

Refrigerated railcars allowed citrus to be kept fresh during transit, enabling producers to ship their products to markets far beyond local regions. This greatly expanded the reach of Florida’s citrus industry, allowing it to access national and even international markets. As a result, Florida became a major supplier of citrus fruits, significantly boosting the industry’s growth and profitability.